March 19 (Reuters) - Facebook co-founder Eduardo

Saverin's global investment firm B Capital on Tuesday announced

the close of its second Opportunities Fund, with total

fundraising of $750 million as it bets on late-stage startups.

The fund will mainly be used to identify investment

opportunities in existing portfolio companies in sectors like

technology, healthcare and climate tech, B Capital said in a

statement.

The fund is nearly double the size of its predecessor, it

added.

The fund received strong participation from both existing

and new investors, said B Capital, which has in the past backed

Indian startups like Think & Learn's Byju's, Meesho

and Pharmeasy.

"In this challenging environment for many private tech

companies, we are pleased to have nearly doubled the capital we

have available to back the best founders in the B Capital

portfolio and other entrepreneurs we have closely followed,"

said Saverin, the co-founder and co-CEO of B Capital.

B Capital was founded in 2015 and has more than $6 billion

in assets under managements across various funds, according to

its website.

(Reporting by Rishav Chatterjee in Bengaluru; Editing by Varun

H K)